package com.taoism.utils;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * 时间获取工具
 *
 * @author 李嘉
 * @version 1.0
 * @Description 时间获取工具
 * @date 2019/3/20 10:42
 */
public class RemindDateUtils {

    /**
     * 获取 当前年、半年、季度、月、日、小时 开始结束时间
     */
    private final SimpleDateFormat shortSdfym;
    private final SimpleDateFormat shortSdf;
    private final SimpleDateFormat longHourSdf;
    private final SimpleDateFormat longSdf;

    public RemindDateUtils() {
        System.setProperty("user.timezone", "Asia/Shanghai");
        this.shortSdfym = new SimpleDateFormat("yyyy-MM");
        this.shortSdf = new SimpleDateFormat("yyyy-MM-dd");
        this.longHourSdf = new SimpleDateFormat("yyyy-MM-dd HH");
        this.longSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
    }

    /**
     * 获得本周的第一天，周一
     *
     * @return
     */
    public Date getCurrentWeekDayStartTime() {
        Calendar c = Calendar.getInstance();
        try {
            int weekday = c.get(Calendar.DAY_OF_WEEK) - 2;
            c.add(Calendar.DATE, -weekday);
            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return c.getTime();
    }


    /**
     * 获得本周的最后一天，周日
     *
     * @return
     */
    public Date getCurrentWeekDayEndTime() {
        Calendar c = Calendar.getInstance();
        try {
            int weekday = c.get(Calendar.DAY_OF_WEEK);
            c.add(Calendar.DATE, 8 - weekday);
            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return c.getTime();
    }

    /**
     * 获得本月的开始时间，即2012-01-01 00:00:00
     *
     * @return
     */
    public Date getCurrentMonthStartTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.DATE, 1);
            now = shortSdf.parse(shortSdf.format(c.getTime()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }


    /**
     * 当前月的结束时间，即2012-01-31 23:59:59
     *
     * @return
     */
    public Date getCurrentMonthEndTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.DATE, 1);
            c.add(Calendar.MONTH, 1);
            c.add(Calendar.DATE, -1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 当前年的开始时间，即2012-01-01 00:00:00
     *
     * @return
     */
    public Date getCurrentYearStartTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.MONTH, 0);
            c.set(Calendar.DATE, 1);
            now = shortSdf.parse(shortSdf.format(c.getTime()));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }


    /**
     * 当前年的结束时间，即2012-12-31 23:59:59
     *
     * @return
     */
    public Date getCurrentYearEndTime() {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.MONTH, 11);
            c.set(Calendar.DATE, 31);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 当前季度的开始时间，即2012-01-1 00:00:00
     *
     * @return
     */
    public Date getCurrentQuarterStartTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            if (currentMonth >= 1 && currentMonth <= 3)
                c.set(Calendar.MONTH, 0);
            else if (currentMonth >= 4 && currentMonth <= 6)
                c.set(Calendar.MONTH, 3);
            else if (currentMonth >= 7 && currentMonth <= 9)
                c.set(Calendar.MONTH, 4);
            else if (currentMonth >= 10 && currentMonth <= 12)
                c.set(Calendar.MONTH, 9);
            c.set(Calendar.DATE, 1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }


    /**
     * 当前季度的结束时间，即2012-03-31 23:59:59
     *
     * @return
     */
    public Date getCurrentQuarterEndTime() {
        Calendar c = Calendar.getInstance();
        int currentMonth = c.get(Calendar.MONTH) + 1;
        Date now = null;
        try {
            if (currentMonth >= 1 && currentMonth <= 3) {
                c.set(Calendar.MONTH, 2);
                c.set(Calendar.DATE, 31);
            } else if (currentMonth >= 4 && currentMonth <= 6) {
                c.set(Calendar.MONTH, 5);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 7 && currentMonth <= 9) {
                c.set(Calendar.MONTH, 8);
                c.set(Calendar.DATE, 30);
            } else if (currentMonth >= 10 && currentMonth <= 12) {
                c.set(Calendar.MONTH, 11);
                c.set(Calendar.DATE, 31);
            }
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }

    /**
     * 前一天开始时间
     *
     * @return
     */
    public Date getBeforeStartTime() {
        Calendar c = Calendar.getInstance();
        try {
            c.add(Calendar.DATE, -1);
            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return c.getTime();
    }

    /**
     * 前一天结束时间
     *
     * @return
     */
    public Date getBeforeEndTime() {
        Calendar c = Calendar.getInstance();
        try {
            c.add(Calendar.DATE, -1);
            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return c.getTime();
    }

    /**
     * 获取前XX天开始时间
     *
     * @return
     */
    public Date getBeforeStartTime(int amount) {
        Calendar c = Calendar.getInstance();
        try {
            c.add(Calendar.DATE, amount);
            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 00:00:00"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return c.getTime();
    }

    /**
     * 获取前XX天结束时间
     *
     * @return
     */
    public Date getBeforeEndTime(int amount) {
        Calendar c = Calendar.getInstance();
        try {
            c.add(Calendar.DATE, amount);
            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return c.getTime();
    }

    /**
     * 获取前XX天开始时间
     *
     * @return
     */
    public Date getBeforeMonth(int amount) {
        Calendar c = Calendar.getInstance();
        Date now = null;
        try {
            c.set(Calendar.DATE, 1);
            c.add(Calendar.MONTH, 1);
            c.add(Calendar.MONTH, amount);
            c.add(Calendar.DATE, -1);
            now = longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59");
            //c.set(Calendar.DATE, 1);
//            c.add(Calendar.MONTH, amount);
//            c.set(Calendar.DATE, -1);
//            c.setTime(longSdf.parse(shortSdf.format(c.getTime()) + " 23:59:59"));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return now;
    }
}
